In Invision Community, you can use either your name or email to log in by default. Invision Community does not have the concept of Username and Display name - There is just simply 'Name'.
However, in my community accounts are created from a game where people have Display Names (Not unique) and Usernames (Unique).
Ideally I'd like to use the Display name as the 'Name' that shows up above people's profiles and can be searched on, mentioned etc, but still have the user log in with their username. Something like this possible?